+#include <algorithm> // IWYU pragma: keep
+#include <cstddef>
+
+#include "types.h"
+
+namespace Stockfish {
+
+class Position;
+
+enum GenType {
+ CAPTURES,
+ QUIETS,
+ QUIET_CHECKS,
+ EVASIONS,
+ NON_EVASIONS,
+ LEGAL
+};
+
+struct ExtMove {
+ Move move;
+ int value;
+
+ operator Move() const { return move; }
+ void operator=(Move m) { move = m; }
+
+ // Inhibit unwanted implicit conversions to Move
+ // with an ambiguity that yields to a compile error.
+ operator float() const = delete;
+};
+
+inline bool operator<(const ExtMove& f, const ExtMove& s) { return f.value < s.value; }
+
+template<GenType>
+ExtMove* generate(const Position& pos, ExtMove* moveList);
+
+// The MoveList struct wraps the generate() function and returns a convenient
+// list of moves. Using MoveList is sometimes preferable to directly calling
+// the lower level generate() function.
+template<GenType T>
+struct MoveList {
+
+ explicit MoveList(const Position& pos) :
+ last(generate<T>(pos, moveList)) {}
+ const ExtMove* begin() const { return moveList; }
+ const ExtMove* end() const { return last; }
+ size_t size() const { return last - moveList; }
+ bool contains(Move move) const { return std::find(begin(), end(), move) != end(); }
+
+ private:
+ ExtMove moveList[MAX_MOVES], *last;